code: def controlled_pauli_evolution(theta, wires, pauli_word, controls):
      r"""Controlled Evolution under generic Pauli words, adapted from the decomposition of
      qml.PauliRot to suit our needs
  
  
      Args:
          theta (float): rotation angle :math:`\theta`
          pauli_word (string): the Pauli word defining the rotation
          wires (Iterable, Wires): the wires the operation acts on
          controls (List[control1, control2]): The two additional controls to implement the
            Hadamard test and the quantum signal processing part on
  
      Returns:
          list[Operator]: decomposition that make up the controlled evolution
      """
      active_wires, active_gates = zip(
          *[
              (wire, gate)
              for wire, gate in zip(wires, pauli_word)
              if gate != "I"
          ]
      )
  
      ops = []
      for wire, gate in zip(active_wires, active_gates):
          if gate in ("X", "Y"):
              ops.append(
                  qml.Hadamard(wires=[wire])
                  if gate == "X"
                  else qml.RX(-np.pi / 2, wires=[wire])
              )
  
      ops.append(qml.CNOT(wires=[controls[1], wires[0]]))
      ops.append(
          qml.ctrl(
              op=qml.MultiRZ(theta, wires=list(active_wires)),
              control=controls[0],
          )
      )
      ops.append(qml.CNOT(wires=[controls[1], wires[0]]))
  
      for wire, gate in zip(active_wires, active_gates):
          if gate in ("X", "Y"):
              ops.append(
                  qml.Hadamard(wires=[wire])
                  if gate == "X"
                  else qml.RX(-np.pi / 2, wires=[wire])
              )
  
      return ops
  
file_path: pennylane/pennylane/transforms/sign_expand/sign_expand.py
imports: import json
  from os import path
  from typing import Sequence, Callable
  import numpy
  import pennylane
  from pennylane.transforms import transform
label_desc: Use image node_id 1 for calling a global function with example usage: controlled_pauli_evolution(theta, wires, pauli_word, controls) and returns: ops